20038977 has 24 divisors (see below), whose sum is σ = 34823360. Its totient is φ = 10847520.

The previous prime is 20038961. The next prime is 20038979. The reversal of 20038977 is 77983002.

20038977 is a `hidden beast` number, since 200 + 389 + 77 = 666.

It is not a de Polignac number, because 20038977 - 2⁴ = 20038961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7174 + ... + 9567.

Almost surely, 2^20038977 is an apocalyptic number.

It is an amenable number.

20038977 is a deficient number, since it is larger than the sum of its proper divisors (14784383).

20038977 is a wasteful number, since it uses less digits than its factorization.

20038977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16773 (or 16770 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 20038977 is about 4476.4915949882. The cubic root of 20038977 is about 271.6179803268.

The spelling of 20038977 in words is "twenty million, thirty-eight thousand, nine hundred seventy-seven".